Pump-operating mechanism.



A. A. BOWSER.

PUMP OPERATING MECHANISM.

APPLICATION mm mu. n. 1912.

"1.170334. Patented Feb. 8, 1916.-

3 SHEETSSHEET 2.

/ ie I,

in V Z6 i I !i- Z6 QEIBOu/SeI' t Au Al PUMP OPERATING MECHANISM. 7APPLICATION FILED mujn, 1912. 1,170,734. Patented Feb. '8, 1916.

3 SHEETSSHEE T 3.

"UNITED STATES "PATENT OFFICE.

ALLEN A. BOWBEB, OF FORT WAYNE, INDIANA, ASSIGNOB 1'0 8. F. BOWSEB &COMPANY, INCORPORATED, 01' 1'03! WAYNE, INDIANA, A CORPORATION OFINDIANA.

PUMP-OPERATING MECHANISM.

Specification of Letters Patent. I

Patented Feb. 8, 1916.

Application 'flle'd January 17, 1912. Serial No. 671,551.

This invention relates to improvements in I pumps of the type known asmeasuring pumps and one of the objects of the inven tion is to providean improved pump of this class having means whereby the reciprocatingmotion of the pump piston will be '15 converted into a rotary motion formoving the indicator, and means whereby the mechanism which controls thestroke of the piston may be readily and quickly adjusted to vary thepiston stroke to accommodate liquids of different densities.

'A further object is to provide an improved pump of this class whichwill be simple, durable, cheap and compact in con struction, andeffective and eflicient in operation.

To the attainment of these ends and the accomplishment of other new anduseful ob-. jects, as will appear, the invention consists in thefeatures of novelty in substantially the construction, combination andarrangement of the several parts hereinafter more fully described andclaimed and shown in the accompanying drawings illustrating an exampleof the invention, and in which- "Figure 1 is a front elevation partly insection of an improved, pump of this class constructed in accordancewlth the principles of this invention; Fig. 2 is a sectional view online-22, Fig. 1; Fig. 3 is a detail view taken on line 3-3, Fig. 2; Fig.4 is a detail sectional view taken on line 44, Fig. 3; Fig. 5 is aperspective view of a detail; Fig. 6 is a sectional view taken on line6-6 Fig. 2; and Fig. 7 is a detail view of the operating crank.

Referring more particularly to the draw ings and in the presentexemplification of this invention, the numeral 20 designates a pumpcylinder within which a pump piston having suitable packing is adaptedto be reciprocated by means .of a piston rod 22 which passes through asuitable bushing 23 and also a guide 24 formed on a portion of theframework 25'. The mechanism for unpartmg a reci rocatory movement tothis piston, preferab y comprises a driving gear 25 connected with whichis a bearing 26, within which bearing is arranged a bearing block 27held in position in any suitable manner, preferably by means offastening device 28 for securing split portions of the bearing 26 forclamping the bearing block 27. A rod or link 29 is pivotally connectedby one extremity 30 to the piston rod 23, and thls extremity of the rod29 is deflected or bent laterally, as shown in Fig. 2, to enter abearlng 31 which is secured tothe iston rod preferably by means ofsuitable astening devices 32, and in which bearing the ex- ;tremity 30of the rod is loosely pivoted. A fastening devlce 33 serves to hold theextremity 30 of the rod against displacement with respect to the bearing31. The other extremity of this rod 29 is also deflected or bent asshown at 34 and this bentportion has a bearing in the bearing block 27and eccentric with respect thereto.

The free extremity of the portion 34 projects beyond the bearing block27 and is held by means of a fastening device 35, and if desired, awasher 36 may be disposed between the fastening device 35 and the end ofthe bearing block 27, which latter has engagement with the face of thegear 25 to hold the bearing block 27' against accidental displacement.Thus when the gear 25 is rotated through the medium of a meshing gear37, which in turn is journaled in a suitable bearing 38 and is operatedby means of a crank handle 39 having a pawl and ratchet connection 40and 41 with the axle of the gear 37 the rod will be reciprocated andthis will in turn impart a reciprocatory .movement to the piston rod 22and the piston 21.

The amount of liquid discharged from the pump is indicated upon anindicator designated generally by the reference numeral 42 over which anindex or pointer 43 is adapted to be moved. This index has a ro-'tarymotion through the medium of a gear the gear is of a diameter lessthan the dis-j gear 44 is preferably located in front of the gear and inproximity thereto so that when it is rotated, it will move the hand orpointer 43 across the dial. receives its motion from, the movement ofthe piston, but inasmuch as the movement the piston is reciprocatory,and the index or pointer should be glven a constant direction ofmovement, it would be 'manifest thatit is necessary to dlsconnect theindex, or pointerfrom the piston. when it is moving in one direction,and to connect it to the pistonwhen the iston is moving in the otherdirection. hat is to say,.the gear 44 must be given a constant directionof movement,

while theoperating mechanism for this gear has amovement in twodirectlons. In order therefore to accomplish this, there is provided aconnection between the gear 44andthe piston rod 23 which embodiestwooppositely disposed rack members 47-48 be--- tween which the gear 44is arranged, and

tance between the racks. These racks are connected as at 49 toformsubstantially av out of engagement with the gear 44, so that when thepiston rod is movlng in one direetion, one of the racks will be inengagement.

with the gear, but when thepistonis reversed to move in the oppositedirection,

A the. other rack will bemoved intoengagement with the gear. Thisalternate engagement of the racks with the gear 44 will im-" aconstantdirection of rotation thereto 7 part as well as to the index, so thatthe latter will not bemoved back over the dial 42 during the returnmovement of the piston. The

,racks are adapted to be reciprocated with the piston rod through themedium'of a connection between the racks and preferably the gear 25. Inorder to accomplish this,

there is provided a bar or rod 53, one end.

of which is bent as at 54 and passes loosely through a portion of thearm 50 and is held against displacement bv means of a fastening device55. The other extremity of the rod 53 passes through the bearing 55,which has an apertured body portion 56, and the latteris connected withthe gear25 preferably by means of the bearing block 27 through whichapertured body portion=56 the bearing block 27 passes, andthis block 27is provided with a head or shoulder por tionv 57 of a size much largerthan the aperq The gear44' :The, extremity of rod 53 passes of\ ment bysuitable fastening nuts 58 a ture in the member 55 as shown more clearlyinFig. 4, so that said bearing 55 has free movement with respect to thebearinglblock. t rough the bearing 55 and is-h'eld against disglaczablyengaging the extremity of the rod 53 on each side of the bearing 55.Thus when the gear 25 is rotated, a reciprocating movement will, also beimparted to the rack members 47-48.

In order to automatically throw one of the rack members 47-48 out ofengagement with the gear 44 at the proper time, and

to move the other rack into engagement therewith, there is providedanother bar or link 59 (seeparticularly Fig. 6) which is pivotallyconnected by one end as at 60, to

the arm 50, preferably adjacent the pin and slot connectlon 51-52 of thearm 50 with the bearing 31. The bar 59 extends through a suitable guide61 through which it freely moves, and an elastic member 62 surrounds thebar 'on one side of the guide 61 and has engagement with an adjustablenut or collar 63 on the extremity of the bar. Another elastic member 64surrounds the bar 59 on the opposite side of the guide'61 and theseelastic members are of such a length or size, as to permit the bar 59to'move freely through the guide 61, but before the bar reaches thelimit of its movement in either direction, the respective elasticmembers 62-64 will engagewith the guide 61,

so that a further movement of the bar 59 in the same direction willcompress the respective elastic members.

In Fig. '6 fthe'drawings the rack 48 is shownin engagement with the gear44 and is held in this." position .by means of a suitable guide orextension 65 carried by the rack' memberand whichcoiiper'ates with asimilar guide or extension 66 carried-by the guides 461' These twoguides 65-66 are of such a length, and are so disposed with respect toeach other, that when the piston 21 reaches the limit of its movement inone direction, the .extremity of the guides will be adjacent each other.The respective elastic members 62-64 will also be compressed in themanner already set forth, by the time the extremity of these guides areadjacent each other, and a further movement of the rack inthe samedirection, will. cause the extremity of one of the guides to pass beyondthe extremity of the other guide to permit the tension created upon theelastic member to rock the arm 50 about its point of ivotal support .54,to shift 'one of the rac s but of engagement with the gear 44 and theother into engagement with the gear 44 and on the opposite side thereof.

,.After this movement of the racks 48, the

piston 21 will begin to move in the opposite direction, and this willalsomove the racks in the opposite direction of its reciprocation, butinasmuch as the rack engages the gear 44 on the side opposite to that onwhich it engaged the gear during the first movement of the rack theindexor pointer 43 will continue to move in the same direction as it wasmoved by the first rack. During this rack 47 out of engagement with the.gear 44 and the rack 48 back into engagement therewith. Thus it will bemanifest that a constant direction of movement is imparted to the index43 while a reciprocatory movement is imparted to the piston.' Heavy orviscous liquids are not pumped as readily as lighter liquids andsometimes the amount pumped by a single stroke varies. Therefore it isnecessary to provide some means to vary the length of stroke of thepiston.

\Vhen it is desired to vary the length of stroke of the piston tocorrespondingly vary the amount pumped, all that is necessary is toloosen the fastening device 28 (see Fig.

3), which will permit the bearing block 27 to be rotated in its bearing,and inasmuch as the end 34 of the rod 29 is eccentrically connectedtherewith, a variable degree of motion may be given to the piston. It isnot advisable however, to adjust or vary the movement of the index withrespect to the piston, and therefore, in order to obviate such anadjustment or variation of movement of the index, when the stroke of thepiston is varied as above described, the pin and slot connection 5152 isprovided which compensates for such adjustment and permits the piston tobe adjusted without adjusting or varying the movement of the racks. Byloosening the nut of fastening device 67, this adjustment may beobtained,

and when adjusted, may be tightened again.

The dials 42 are interchangeable and are graduated in accordance withthe amount of liquid to be discharged at a predetermined price, that isto say, as illustrated in the present exemplification of the invention,the dial therein shown is graduated for 1 gall'on of liquid at 20 pergallon, and other dials may be provided, which are interchangeable withthis dial, for the same quantity of liquid at a different price pergallon. All of these dials are placed against each other, and aretogether arranged within the annular member 68 (see Figs. 1 and 2), and.are provided with an opening through which the axle 45 of the gear 44passes. ,An annular cap member 69 which has a threaded peripherycooperating with threads on the annular member 68, serves'to hold thesedials in position. When it is desired to change the dials, all that isnecessary is to. unscrew themember 69,; interchange the dials and thenscrew the member back into position. j 1

- The index or pointer 43 is adapted to be set to the number of gallonsdesired, and

as the crank handle 39 is operated to discharge the liquid, the indexmoves from .its predetermined position back toward the zero.' When it Isdesired todischarge another quantity, the index must be set to thepredetermined quantity. In order therefore to permit the .index to bethus set, it must be connected with the axle 45 of the gear 44, whichmoves it in such a manner as to permit it to be readily adjusted. Forthis purpose'a suitable double clutch mechanism operated by a knob 74,is provided.

In order to guide the piston 21, the piston rod 22 projects for somedistance to the other side of/the piston and this projecting portionmoves through a suitable bushing or bearing 8 at the base of the pumpcylinder 20 and into a casing 79. The cylinder 20 of the pump receives.its supply through an inlet pipe 80 which has connection with a header81 with which the pump cylinder has connection, and another header 82 isarranged at the other end of the cylinder, and with which the cylinderhas connection. These header members are formed with pamages" controlledby valves which are so arranged that when the piston is moved in onedirection, one of the valves will be opened to permit the liquid to flowinto the cylinder, and when the piston is moved in the oppositedirection, the liquid which has just entered on oneside of the piston,will be forced out of the cylinder through a passage 87 havingconnection with the cylinder .20 on that side of the piston, to flowthrough the through the passage 88 to the outlet pipe 89, which is thedischarge of the pump. The operation just described, is effected whenthe piston is moving downwardly.

Inorder to accommodate any excess.

:liquid will 'flow. When the liquid flows into this receptacle 90, acushion'will be formed above the liquid by the air which is compressedin the receptacle by the admission of the liquid so that when thepressure created by the piston is relieved from the liquid, the pressureof the air will operate to force the liquidout of' the receptacle.

What is claimed as new is:

passage 87, and out e 1. combinationhof a {fro opposltely disposed rackswith teeth on the inside, a rotatable'toothed member between themadapted to engage one or the other,

connected for movement,

1 means having only oneconnectionwith the v with which the racks aremovable, an arm frame for moving thej'frame laterally at each end of itsstroke.

:2. The combination with a rotary toothed gear,.of racks on each side ofthe gear connec'ted together so th'atthe gear, enga es only one oftheracks, a reciprocable mem r connected to the racks, a rod connected tothe arm having springs at the ends, and

means to engage the springs whereby the racks are moved laterally at theends of the I strokes of the reoiprocable member to move necte to saidframe,

- whereby the -frame will be shifted laterally pinion alternately with"the one of the racks into and the other rack out of engagement with thetoothed member.

3. The combination with a drivinggear, of a pump rod reciprocatedthereby, a frame reciprocated by therod having opposite-m side racks, apinion to engage one 0f the racks but havin springs thereon at eachendconand a guidethrough which the rod passes adapted to engage one ofthe springs at each end of the stroke of r the frame and to compress thespring movement of the frame.

4. The combination with a rotary driving member, of a memberreciprocated thereby,

a frame with opposite inside racks connected to move with the member, apinion to engage one but not both of the racks at the same time, and adouble spring mechanism in connection with the frame to shift the framelaterally only atthe ends of the strokes thereof to changethe engagementof the racks with the pinion.

5'. The combination with a rota driving member, of a rodreciprocated .tereby, a

frame with oppositev inside racks adjustably connected to the'ro'd, a.inion to engageone but not both of the rac at the same time,

and means in connection with the frame to shift the frame laterally inopposite d rec'- tions at the opposite endzof its stroke.

a I o 6. lhe combm t1on w th a reciprocating element of a member to berotatedv in a single direction, means in connection w th member onopposite sides thereof, and re-' opposite directions at opposite ends 0the stroke whereby the rotary member will be n. in a constant direction.J

7. The comb'nation with a rotarydriving member, of a. reciprocatingmember drivennot both at the same time, a rod varied."

"for varyingthedegree the reciprocating elementtoengagethev, f-rarra eeing member having opposite inside racks, a-

sgring mechanism connected to one point of a reciprocable rod to. whichthe frame is t and resilient.

e frame, and a rod connecting the frame and the driving member wherebythe frame is shifted laterally ateach end of its stroke to move one ofthe racks into engagement with the pinion. I i 8. The combination with arotary driving connected .to the frame on one side of the a pivotalconnection, anda rod connected to the frame at the other side of thepivotal connection and to the said driving member for presslng the frameyieldingl in op 0- site directions at o posite ends 0 its stro e.

9. The combination with a rotary driving member, of. a reciprocable rodhaving an" adjustable. connection with the driving member for varyingthe stroke of the rod, a framehaving a slotted pivotal connection with;the rod and provided with opposite inside racks, a'pinion having .aconstant direetion of rotation adapted to be engaged b .but'not both ofthe racks, a spring m connected with the frame on one sTe -ofthe'plvot'al connection, and a rod iQflmeeted to theframe on the-otherside of the pivotal connection and adjustably conneeted to the rotarydriving member to oscillate the frame yieldingly in opposite lateraldirections at the op osite ends of. its; stroke whereby the lengt ofstroke of the frame is. maintained constant when the lengthof stroke ofthe reciprocable rod is 10; The combination with a reci rocable rod,'.ofa pinion having a constant irection of rotation, means comprising aplurality of racks movable with the rod for driving the pinion inasingle direction, spring mechanism connected to the racks andcontrolled by ,the movement thereof for alternately rendering the-rackelements active and inactive with respect to the inion, and means 0movement of the reciprocating rod while the degree of movementzof thesaid racks remains constant.

11. The combination with a reciprocating member, of-a'ipinion adapted tobe rotate -oppositely disposed racks adapted to be shifted laterally tobe alternately rendered active and inactive with respect to the pinion,means in connection with the racks for shiftingthem laterally at theends of the strokes thereof, a frame for supporting the racks andpinionhaving a guide substantially equalfto half the length of stroke ofwe the rack, and another guide carried by one name to thisspecification, in thepresence of the racks and ofsubstantially the sameof two subscribing Witnesses, on this 15th length as the other guideadapted to be day of November A. D. 1911. V moved on opposite sides ofthe guide on the ALLEN A.'BOWSER.

= 5 frame for maintaining the racks in their. Witnesses:

shifted positions. J. W. Btnmows; I i In testimony whereof I have signedmy C. M. SMITH. r

